MAX15003
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MAX15003

Triple-Output Buck Controller with Tracking/Sequencing

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Flexible, Triple Controller Delivers 15A per Output with Sequencing and Tracking Control

Info: : PRODUCTION tooltip
Info: : PRODUCTION tooltip
Part Details
Part Models 2
1ku List Price Starting From $3.40
Features
  • 5.5V to 23V or 5V ±10% Input Voltage Range
  • Triple-Output Synchronous Buck Controller
  • Selectable In-Phase or 120° Out-of-Phase Operation
  • Output Voltages Adjustable from 0.6V to 0.85VIN
  • Lossless Valley-Mode Current Sensing or Accurate Valley Current Sensing Using RSENSE
  • External Compensation for Maximum Flexibility
  • Digital Soft-Start and Soft-Stop
  • Sequencing or Coincident/Ratiometric VOUT Tracking
  • Individual PGOOD Outputs
  • Active-Low RESET Output with a Programmable Timeout Period
  • 200kHz to 2.2MHz Programmable Switching Frequency
  • External Frequency Synchronization
  • Hiccup Mode Short-Circuit Protection
  • Space-Saving (7mm x 7mm) 48-Pin TQFN Package
Additional Details
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The MAX15003 is a triple-output, pulse-width-modulated (PWM), step-down DC-DC controller with tracking and sequencing capability. The device operates over the input voltage range of 5.5V to 23V or 5V ±10%. Each PWM controller provides an adjustable output down to 0.6V and delivers up to 15A for each output with excellent load and line regulation. The MAX15003 is optimized for high-performance, small-size power management solutions.

The options of coincident tracking, ratiometric tracking, and output sequencing allow the tailoring of the power-up/power-down sequence depending on the system requirements. Each of the MAX15003 PWM sections utilizes a voltage-mode control scheme with external compensation allowing for good noise immunity and maximum flexibility with a wide selection of inductor values and capacitor types. Each PWM section operates at the same, fixed switching frequency that is programmable from 200kHz to 2.2MHz and can be synchronized to an external clock signal using the SYNC input. Each converter operating at up to 2.2MHz with 120° out-of-phase, increases the input capacitor ripple frequency up to 6.6MHz, thereby reducing the RMS input ripple current and the size of the input bypass capacitor requirement significantly.

The MAX15003 includes internal input undervoltage lockout with hysteresis, digital soft-start/soft-stop for glitch-free power-up and power-down of each converter. The power-on reset (active-low RESET) with an adjustable timeout period monitors all three outputs and provides a active-low RESET signal to the processor when all outputs are within regulation. Protection features include lossless valley-mode current limit and hiccup mode output short-circuit protection.

The MAX15003 is available in a space-saving, 7mm x 7mm, 48-pin TQFN-EP package and is specified for operation over the -40°C to +125°C automotive temperature range. See the MAX15002 data sheet for a dual version of the MAX15003.

Applications

  • Networking/Server Power Supplies
  • PCI Express® Host Bus Adapter Power Supplies
  • Point-of-Load DC-DC Converters
Part Models 2
1ku List Price Starting From $3.40

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Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
MAX15003ATM+
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MAX15003ATM+T
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Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 1

MAX15003EVKIT

Evaluation Kit for the MAX15003

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MAX15003EVKIT

Evaluation Kit for the MAX15003

Evaluation Kit for the MAX15003

Features and Benefits

  • Triple-Output Power Supply
    • VOUT1 (3.3V, 3A)
    • VOUT2 (2.5V, 4A)
    • VOUT3 (1.2V, 10A)
  • 600kHz PWM Switching
  • Programmable Switching Frequency Up to 2.2MHz
  • External Frequency Synchronization
  • Selectable Tracking or Sequencing Operation Mode
  • Selectable Phase Operation Mode
  • Individual PGOOD and Active-Low RESET Signal Outputs
  • Fully Assembled and Tested

Product Detail

The MAX15003 evaluation kit (EV kit) is a fully assembled and tested surface-mount printed-circuit board (PCB) that demonstrates the capabilities of the MAX15003 IC. The MAX15003 IC is a high-performance triple-output synchronous buck controller, capable of delivering up to 10A per output with tracking and sequencing capability. The EV kit requires a DC input-voltage range of 6V to 14V (12V typ) for normal operation.

The EV kit outputs are configured for 3.3V, 2.5V, and 1.2V, and provide 3A, 4A, and 10A, respectively. The MAX15003 IC switching frequency is programmed to 600kHz or can be synchronized to an external clock signal with a frequency of up to 2.2MHz. The phase-and-tracking/sequencing operation modes are configurable. The PGOOD1, PGOOD2, PGOOD3, and active-low RESET logic signal output pads are provided for circuit monitoring.

Applications

  • Networking/Server Power Supplies
  • PCI Express® Host Bus Adapter Power Supplies
  • Point-of-Load DC-DC Converters

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